1. He has cereal and milk for breakfast.

Question

2. He has cereal with milk for breakfast.
[Which one do we have to use? Are both okay? When we pour milk into a bowl of cereal, which expression do we use?]

3. I have rice, kimchi, some vegetable side dishes for breakfast.
[Is it okay?]

4. I have bread and butter for breakfast.
5. I have bread with butter for breakfast.
[What about these sentences? What is the difference between them?]

Answer 1

1 and 2 usually mean the same thing if the milk is poured over the cereal.

In 3, you need "and" after the second comma.

4 and 5 usually mean the same thing.